Camille Bauer APLUS-LED Device Handbook

Device handbook

APLUS-LED

Operating Instructions APLUS with LED display or without display
157 679-19 (PM 1000357 000 01) 04/2016

Camille Bauer Metrawatt AG

Aargauerstr asse 7
CH-5610 Wohlen / Switzerland
Phone: [phone]
Telefax: [phone]
e-Mail: [e-mail]

http://www.camillebauer.com

2/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

Legal information

Warning notices

In this document warning notices are used, which you have to observe to ensure personal safety and to prevent
damage to property. Depending on the degree of danger the following symbols are used:

If the warning notice is not followed death or severe personal injury
will result.

If the warning notice is not followed damage to property or severe
personal injury may result.

If the warning notice is not followed the device may be damaged or

may not fulfill the expected functionality.

Qualified personnel

The product described in this document may be handled by personnel only, which is qualified for the respective
task. Qualified personnel have the training and experience to identify risks and potential hazards when working
with the product. Qualified personn el are als o able to understa nd and follow the given safety and warning
notices.

Intended use

The product described in this document may be used only for the application specified. The maximum electrical
supply data and ambient conditions specified in the technical data section must be adhered. For the perfect and
safe operation of the device proper transport and storage as well as professional assembly, installation,
handling and maintenance are required.

Disclaimer of liability

The content of this document has been reviewed to ensure correctness. Nevertheless it may contain errors or
inconsistencies and we cannot guarantee completeness and correctness. This is especially true for different
language versions of this document. This document is regularly reviewed and updated. Necessary corrections
will be included in subsequent version and are available via our webpage http://www.camillebauer.com

.

Feedback

If you detect errors in this document or if there is necessary information missing, please inform us via e-mail to:
[e-mail]

3/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

Contents

1. Introduction ..................................................................................................................... 5

1.1 Purpose of this document ........................................................................................................ 5

1.2 Scope of supply ....................................................................................................................... 5

1.3 Further documents .................................................................................................................. 5

2. Security notes .................................................................................................................. 6

3. Device overview............................................................................................................... 6

3.1 Brief description ....................................................................................................................... 6

3.2 Possible modes of operation ................................................................................................... 7

3.3 Monitoring and alarming .......................................................................................................... 8

3.3.1 Alarming concept ................................................................................................................................. 8

3.3.2 Logic components ..............................................................................................................................10

3.3.3 Limit values ........................................................................................................................................11

3.3.4 Sequence of evaluation .....................................................................................................................12

3.4 Free Modbus image .............................................................................................................. 13

4. Mechanical mounting .................................................................................................... 14

4.1 Panel cutout .......................................................................................................................... 14

4.2 Mounting of the device .......................................................................................................... 14

4.3 Demounting of the device ...................................................................................................... 14

5. Electrical connections .................................................................................................. 15

5.1 General safety notes ............................................................................................................. 15

5.2 Electrical connections of the I/Os .......................................................................................... 16

5.3 Possible cross sections and tightening torques ..................................................................... 16

5.4 Inputs .................................................................................................................................... 17

5.5 Rogowski current inputs ........................................................................................................ 21

5.6 Power supply ......................................................................................................................... 22

5.7 Relays ................................................................................................................................... 22

5.8 Digital inputs and outputs ...................................................................................................... 23

5.9 Analog outputs ...................................................................................................................... 25

5.10 Modbus interface RS485 X4 and / or X8 ............................................................................... 25

5.11 Profibus DP interface............................................................................................................ 26

6. Commissioning.............................................................................................................. 27

6.1 Software installation CB-Manager ......................................................................................... 27

6.2 Parametrization of the device functionality ............................................................................. 28

6.3 Installation check ................................................................................................................... 29

6.4 Installation of Ethernet devices .............................................................................................. 30

6.4.1 Connection ......................................................................................................................................30

6.4.2 Network installation using the CB-Manager software .....................................................................31

6.4.3 Network installation by means of local programming .....................................................................32

6.4.4 Time synchronization via NTP-protocol ..........................................................................................33

6.4.5 TCP ports for data transmission .....................................................................................................33

6.5 Installation of Profibus DP devices ........................................................................................ 34

6.6 Protection against device data changing ............................................................................... 35

7. Operating the device ..................................................................................................... 36

7.1 Display and operating elements ............................................................................................ 36

7.2 Operating modes ................................................................................................................... 37

7.3 Setting the display brightness ................................................................................................ 38

7.4 Display modes ....................................................................................................................... 39

7.5 Meter reading ........................................................................................................................ 42

4/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

7.6 Alarm handling ...................................................................................................................... 43

7.6.1 Alarm state display on the device ..................................................................................................... 43

7.6.2 Display of alarm texts ........................................................................................................................ 43

7.6.3 Acknowledgment of alarms via display ............................................................................................. 44

7.7 Resetting of measurements .................................................................................................. 45

7.8 Configuration ........................................................................................................................ 46

7.8.1 Selection of the parameter to edit ..................................................................................................... 50

7.8.2 Discrete selection .............................................................................................................................. 51

7.8.3 Setting value ..................................................................................................................................... 51

7.9 Data logger ........................................................................................................................... 52

7.9.1 Activation of data logger recording ................................................................................................... 52

7.9.2 SD card ............................................................................................................................................. 52

7.9.3 Access to logger data ....................................................................................................................... 53

7.9.4 Logger data analysis ......................................................................................................................... 53

8. Service, maintenance and disposal ............................................................................. 54

8.1 Protection of data integrity .................................................................................................... 54

8.2 Calibration and new adjustment ............................................................................................ 54

8.3 Cleaning................................................................................................................................ 54

8.4 Battery .................................................................................................................................. 54

8.5 Disposal ................................................................................................................................ 54

9. Technical data ................................................................................................................ 55

10. Dimensional drawings ................................................................................................... 60

Annex ................................................................................................................................... 62

A Description of measured quantities ............................................................................. 62

A1 Basic measurements............................................................................................................. 62

A2 Harmonic analysis ................................................................................................................. 65

A3 System imbalance ................................................................................................................. 66

A4 Reactive power ..................................................................................................................... 67

A5 Mean values and trend .......................................................................................................... 69

A6 Meters ................................................................................................................................... 70

B Dis pl ay matrices in FULL mode ................................................................................... 71

B0 Used abbreviations for the measurements ............................................................................ 71

B1 Display matrix single phase system ...................................................................................... 78

B2 Display matrix Split-phase (two-phase) systems ................................................................... 79

B3 Display matrix 3-wire system, balanced load ......................................................................... 80

B4 Display matrix 3-wire systems, unbalanced load ................................................................... 81

B5 Display matrix 3-wire systems, unbalanced load, Aron .......................................................... 82

B6 Display matrix 4-wire system, balanced load ......................................................................... 83

B7 Display matrix 4-wire systems, unbalanced load ................................................................... 84

B8 Display matrix 4-wire system, unbalanced load, Open-Y ....................................................... 85

B9 Display matrix of mean-values of power quantities ................................................................ 86

C FCC statement ............................................................................................................... 87

INDEX ................................................................................................................................... 88

5/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

1. Introduction

1.1 Purpose of this document

This document describes the universal measurement device for heavy-current quantities APLUS. It is
intended to be used by:

• Installation personnel and commissioning engineers

• Service and maintenance personnel

• Planners

Scope

This handbook is valid for all hardware versions of the A

PLUS with LED display or without display. Some of

the functions described in this document are available only, if the necessary optional components are
included in the device.

Required knowledge

A general knowledge in the field of electrical engineering is required. For assembly and installation of the
device knowledge of applicable national safety regulations and installation standard is required.

1.2 Scope of supply

• Measurement device APLUS

• Safety instruct ions (multiple languages)

• Connection set basic unit: Plug-in terminals and mounting clamps

• Optional: Connection set I/O extension: Plug-in terminals

1.3 Further documents

Via our homepage http://www.camillebauer.com further documents about the APLUS can be downloaded:

• Safety instructions APLUS

• Data sheet A

PLUS

• Modbus basics: General description of the communication protocol

• Modbus interface A

PLUS: Register descript ion of Modbus/RTU communication via RS-485

• Modbus/TCP interface A

PLUS: Register description of Modbus/TCP communication via Ethernet

6/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

2. Security notes

Device may only be disposed in a professional manner !

The installation and commissioning should only be carried out by trained personnel.
Check the following points before commissioning:
– that the maximum values for all the connections are not exceeded, see "Technical data"

section,
– that the connection wires are not damaged, and that they are not live during wiring,
– that the power flow direction and the phase rotation are correct.
The instrument must be taken out of service if safe operation is no longer possible (e.g. visible

damage). In this case, all the connections must be switched off. The instrument must be
returned to the factory or to an authorized service dealer.

It is forbidden to open the housing and to make modifications to the instrument. The instrument
is not equipped with an integrated circuit breaker. During installation check that a labeled switch
is installed and that it can easily be reached by the operators.

Unauthorized repair or alteration of the unit invalidates the warranty.

3. Device overview

3.1 Brief description

The APLUS is a comprehens ive instrument for the u niversal measurem ent, monitoring and power quality
analysis in power systems. The device can be adapted fast and easily to the meas urement task by means
of the CB-Manager software. T he universal measurement s ystem of the device may be used directl y for
any power system , from single ph ase up to 4-wire unbalanced netw orks, without hardware m odifications.
Independent of measurement task and outer influences always the same high performance is achieved.

Using additional, opt ional com ponents the opportunities of the A

PLUS m ay be extended . You may choose

from I/O extens ions, communic ation interf aces or data log ger. The nam eplate on the d evice gives f urther
details about the present version.

The version with top-ha t rail adapter instead of the display has th e same dimens ions and connec tions as
the version with display and supports the same options.

7/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

3.2 Possible modes of operation

The APLUS can cover a wide range of possible input ranges without any hardware variance. The adaption
to the input signal is performed by means of variable amplifying levels for current and voltage inputs.
Depending on the application it makes sense to fix these levels by means of the configuration or to let
them stay variable to achieve a maximum accuracy during measurement. The differentiation, if the
amplifying remains constant or is adapted to the present value, is done during the definition of the input
configuration by means of the parameter "auto-scaling".

The disadvantage of auto-scaling is t hat whe n an amplifying level needs to be changed, a settling time of
at least one cycle of the power frequency must be allowed until the signals have stabilized again. During
this short time the measurement results remain frozen.

Continuous measurement

An absolute uninterrupted measurement of all quantities assumes that auto-scaling is deactivated for both
voltage and current inputs.

Metering

The uncertainty of the active energy meters of the A

PLUS is given with class 0.5S. To fulfill the high

requirements of the underlying meter standard EN 62053-22 also small currents have to be measured
very accurate. To do so, auto-scaling must be activated for current inputs. For metering applications the
system voltage is assumed to be quite constant, nominal value acc. standard, wherefore auto-scaling for
voltages is not required. The subsequent example shows an appropriate configuration, which also
conforms to the factory setting of the device.

Dynamic monitoring of limit values

An important criterion when monitoring the quality of the supply voltage is the possibility to detect short
sags of the system voltage. To be able to follow the progress of the voltage auto-scaling of the voltage
inputs should be deactivated. Thereby you have to consider that a possible swell of the voltage may be
detected only up to the configured overriding (20% of rated voltage in the above example), because the
switching of the measurement range is locked in both directions.

This applies analogously to all quantities of the system, whose progress should be monitored. For power
quantities the voltage amplification as well as the current amplification is influenced. However, which basic
quantities may vary how much can differ from application to application.

8/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

3.3 Monitoring and alarming

The logic module integrated in the APLUS is a powerful feature to monitor critical situations without delay
on device side. By implementing this local intelligence a safe monitoring can be realized which is
independent of the readiness of the control system.

3.3.1 Alarming concept

How alarms are handled is decided during the configuration of the device. For that in the logic module you
can define if LED's are used for alarm state display and how resp. when a possibly activated action, such
as the switching of a relay, will be reset. These configuration parameters are highlighted in yellow in the
following chart.

LED ON

Alarm

acknowledged

?

Alarm state

still persists ?

slow flashing

Y

Y

Y

N

N

Acknowledg.

of LEDS

required ?

Stop

flashing

LED OFF

Alarm state

still persists ?

N

Y

N

Fast

flashing

ALARM

LED used

for alarm
display ?

No action

N

Action

configurated

?

Perform action

Alarm state

still persists ?

Y

N

Action

resettable

?

Reset

?

Action reset

Y

N

N

Y

N

Y

Y

► Acknowledgment: This procedure affects the state of the LED only
If an alarm state is visualized via LED, its occurence must be acknowledged v ia displ a y (see:

Acknowledgment of alarms via display), no matter if it is still active (fast flashing) or has dropped-out

already (slow flashing). By acknowledging an alarm, only the flashing of the LED stops, but a reset of the
alarm action is performed only if the display is configured as a possible source for alarm reset.

Acknowledgment is not required if "acknowledgement of alarm LEDs required" in the
logic module configuration is not selected.

► Alarm reset : This procedure affects the states of the follow-up action and the LEDs
If an alarm state occurs a follow-up action (e.g. the switching of a relay) can be triggered. This follow-up

action is normally reset as soon as the alarm condition no longer exists. But the alarm handling may be
configured as well in a way that only by means of an alarm reset the subsequ ent o perati on is withdra w n.
This way an alarm remains stored until a reset is performed, even if the alarm situation no longer exists.
Possible sources for an alarm reset are the display, a digital input, another logical state of the logic
module or a command via the bus interface.

Hint: If an alarm is reset, the alarm state visualized via LED is acknowledged at the same time.

On the next page some signal flow examples are shown.

9/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

Z: Logic output determined from all involved logic

inputs

D: Corresponds to signal Z, delayed by the switch-in

resp. dropout delay

A: Output signal of the logic function
S: State of the subsequent operation (e.g. of a relay),

corresponds normally to A, but may be inverted
(subsequent operation: relay OFF)

1) Alarm reset inactive, switch-in and dropout delay 3s, follow-up action not inverted

Acknowledgment of
LED, inactive alarm

Acknowledgment of

LED, active alarm

2) Alarm reset active, switch-in and dropout delay 0s, follow-up action inverted

Reset when alarm is

inactive

Reset when alarm is

still active

10/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

3.3.2 Logic components

The logic outputs are calculated via a two level logical combination of states, which are present at the
inputs. Usable components are AND, OR and XOR gates as well as their inversions NAND, NOR and
XNOR.

The principal function of the logical gates is given in the following table, for simplicity shown for gates with
two inputs only.

function symbol

older symbols

truth table plain text

ANSI 91-1984

DIN 40700 (alt)

AND

A B Y 0 0

0

0 1 0

1 0 0 1 1

1

Function is true if all input
conditions are fulfilled

NAND

A B Y

0 0 1

0 1 1 1 0 1 1 1 0

Function is true if at least
one of the input
conditions is not fulfilled

OR

A B Y

0 0 0 0 1 1 1 0 1 1 1

1

Function is true if at least
one of the input
conditions is fulfilled

NOR

A B Y 0 0 1 0 1 0 1 0

0

1 1 0

Function is true if none of
the input conditions is
fulfilled

XOR

A B Y

0 0 0

0 1 1

1 0 1

1 1 0

Function is true if exactly
one of the input
conditions is fulfilled

XNOR

A B Y

0 0 1

0 1 0

1 0 0 1 1

1

Function is true if all of
the input conditions are
fulfilled or all conditions
are not fulfilled

The logic components of the first level may combine up to three, the components of the second level up to
four input conditions. If individual inputs are not used, their state is automatically set to a condition which
has no influence on the logic result.

11/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

3.3.3 Limit values

States of limit values are the most important input quantities of the logic module. Depending on the
application, limits either monitor the exceeding of a given value (upper limit) or the fall below a given value
(lower limit). Limits are defined by means of two parameters, the limit for the ON and the limit for the OFF
state. The hysteresis is the difference between these two values.

Upper limit: The limit for ON state (

L.On

) is higher than the limit for the OFF state (

L.OFF

)

Limit for OFF state

Limit state

0

1

Limit for ON state

► The state 1 (true) results if the limit for ON state is exceeded. It remains until the value falls below the

limit for OFF state again.

► The state 0 (false) results if the limit for ON state is not yet reached or if, following the activation of the

limit value, the value falls below the limit for OFF state again.

Lower limit: The limit for ON state (

L.On

) is smaller than the limit for OFF state (

L.OFF

)

Limit for ON state

Limit state

0

1

Limit for OFF state

► The state 1 (true) results if the value falls below the limit for ON state. It remains until the value

exceeds the limit for OFF state again.

► The state 0 (false) results if the value is higher than the limit for ON state or if, following the activation

of the limit value, the value exceeds the limit for OFF state again.

If for a limit value the limit for ON state and the limit for OFF state are configured to
the same value, it will be treated as an upper limit value with a hysteresis of 0%.

Limit values may be used to control the running of operating hour counters. As long as the limit values
are fulfilled (logical 1) the operating hour counters keep on running. Not only operating times may be
measured, but e.g. time under overload condition (additional stress) as well.

12/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

3.3.4 Sequence of evaluation

The evaluation of the logic module is performed from top to bottom and from left to right:

1. Y1, Y2, Y3, Y4

2. Z1, Z2, Z3, Z4

3. D1, D2, D3, D4

4. A1, A2, A3, A4

► The evaluation is performed once each cycle of the power frequency, e.g. every 20ms at 50Hz. But the

time between two evaluations will never be longer than 25ms.

► If the logical states Y1...Y4, Z1...Z4, D1...D4 and A 1...A 4 are used as inputs, their changed states will

be included in the evaluation of the next interval

► Exception: In the first evaluation level the state of previous logical functions may be used as input

without delay, e.g. the state Y1 for the logical functions with output Y2, Y3 or Y4.

13/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

3.4 Free Modbus image

Accessing measured data of a Modbus device often needs some special effort, if the interesting
measurements are stored in different, non continuous register areas. This way multiple telegrams must be
sent to the device to read all data. This needs time and it's very likely, that the measurements don't
originate from the same measurement cycle.

A free assembly of the data to read helps a lot. The A

PLUS supports, along with the still available classical

Modbus image with thousands of registers, the facility to assemble two different images, which may be
read with one telegram only. These freely assembled images are refreshed after each measurement cycle
and therefore always provide the most present values.

The free float image

Up to 60 instantaneous, mean, unbalance or THD/TDD values may be arranged in any sequence on the
register addresses 41840-41958. All of these values are floating point numbers, which allocate 2 registers
per value. Meter values are not possible because they have another format.

The free integer image

Some older control systems are not able to handle float values. To make it possible to work with the data
of the device up to 20 16-Bit integer values can be derived from the existing measurement values. These
values will then be stored in the free Modbus image (register 41800 up to 41819) as integer values with
selectable range of values.

Example: Current transformer 100/5A, measurement current phase 1, over range 20%

► The reference value is 120A (maximum measurable current)
► The integer value shall be 12'000 if the measurement is 120A

After selecting the measured quantity and entering the register va lue of 12'000 automatically a scaling
factor of 100.0 is calculated. The measurement I1 therefore will be multiplied by 100.0 before it is
converted into an integer value and stored in the Modbus image.

Also in the integer image instantaneous, mean, unbalance or THD/TDD values may be arranged.

For devices with Profibus interface the Modbus image is used for the assembly of the
cyclical telegram. Via Modbus the same image can be used, but it’s not possible to use it
independently.

The Modbus communication of the A

PLUS is described in a separate document. Depending on the

communication hardware selected, either the manual for Modbus/RTU or Modbus/TCP protocol should be
used. These documents can be downloaded via our homepage http://www.camillebauer.com

.

► W157 695: Modbus/RTU interface APLUS (communication interface RS485)
► W162 636: Modbus/TCP interface A

PLUS (communication interface Ethernet)

14/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

4. Mechanic al mounting

► The standard version of the APLUS is designed for panel mounting as shown below
► The version without display with top-hat rail adapter may be clipped onto a top-hat rail according to

EN50022

Please ensure that the operating temperature limits are not exceeded when
determining the place of mounting (place of measurement):

-10 ... 55°C

4.1 Panel cutout

Dimensional drawing A

PLUS:

See section 10

4.2 Mounting of the device

The APLUS is suitable for panel widths up to 10mm.

a) Slide the device into the cutout from

the outside

b) From the side slide in th e m ounting

clamps into the intended openings and
pull them back about 2 mm

c) Tighten the fixation screws until the

device is tightly fixed with the panel

4.3 Demounting of the device

The demounting of the device may be performed only if all connected wires are out of service. Remove

all plug-in terminals and all connections of the current and voltage inputs . Pay attention to the fact, that
current transformers must be shortened before removing the current connections to the device. Then
demount the device in the opposite order of mounting (4.2).

15/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

5. Electrical connections

Ensure under all circumstances that the leads are free of potential

when connecting them !

5.1 General safety notes

Please observe that the data on the type plate must be adhered to !

The national provisions (e.g. in Germany VDE 0100 “Conditions concerning the erection of heavy
current facilities with rated voltages below 1000 V”) have to be observed in the installation and material
selection of electric lines!

Nameplate of a
device equipped
with RS485
interface and I/O
extension 1

Symbol Meaning

Device may only be disposed of in a professional manner!

Double insulation, device of protection class 2

CE conformity mark. The device fulfills the requirements of the applicable EU

directives.
Products with this mark comply with both the Canadian (CSA) and the American (UL)

requirements.

Caution! General hazard point. Read the operating instructions.

General symbol: Input
General symbol: Output

CAT III Measurement category CAT III for current / voltage inputs and power supply

CAT II

Measurement category CAT II for relay outputs

16/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

5.2 Electrical connections of the I/Os

I/O no. Terminal No. APLUS I/O extension 1 I/O extension 2

1 X2 1, 2, 3 Relay
2 X3 1, 2 Digital input
3 X3 3, 4 Digital output
4 X5 1, 2, 3 Relay Relay
5 X6 1, 2, 3 Relay

Relay
6 X7 1, 2 Digital I/O Digital I/O
7 X7 3, 4 Digital I/O Digital I/O
8 X7 5, 6 Analog output ±20mA Digital I/O
9 X7 7, 8 Analog output ±20mA Digital I/O
10 X7 9, 10 Analog output ±20mA Digital I/O
11 X7 11, 12 Analog output ±20mA Digital I/O

I/O no. -

as used in the CB-Manager software

5.3 Possible cross sectio n s and tightening torques

Inputs L1, L2, L3, N, I1 k-l, I2 k-l, I3 k-l

Single wire

1 x 0,5 ... 4,0mm2 or 2 x 0,5 ... 2,5mm

2

Multiwire with end splices
1 x 0,5 ... 2,5mm2 or 2 x 0,5 ... 1,5mm

2

Tightening torque
0,5…0,6Nm resp. 4,42…5,31 lbf in

Power suppl y X1, Relays X2, X5, X6

Single wire

1 x 0,5 ... 2,5mm2 or 2 x 0,5 ... 1,0mm

2

Multiwire with end splices
1 x 0,5 ... 2,5mm2 or 2 x 0,5 ... 1,5mm

2

Tightening torque
0,5…0,6Nm resp. 4,42…5,31 lbf in

I/O's X3, X7 and RS485 connector X4

Single wire

1 x 0,5 ... 1,5mm2 or 2 x 0,25 ... 0,75mm

2

Multiwire with end splices
1 x 0,5 ... 1,0mm2 or 2 x 0,25 ... 0,5mm

2

Tightening torque
0,2…0,25Nm resp. 1,77…2,21 lbf in

17/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

5.4 Inputs

All voltage measurement inputs must originate at circuit breakers or fuses rated 10 Amps or
less. This does not apply to the neutral connector. You have to provide a method for
manually removing power from the device, such as a clearly labeled circuit breaker or a
fused disconnect switch.

When using voltage transformers you have to ensure that their secondary connections
never will be short-circuited.

No fuse may be connected upstream of the current measurement inputs !
When using current transformers their secondary connectors must be short-circuited

during installation and before removing the device. Never open the secondary circuit under
load.

The connection of the inputs depends on the configured system (connection type). The required device

external fusing of the voltage inputs is not shown in the following connection diagrams.

Single-phase AC mains

1L

Direct connection

L1 L2 L3 N I1 I

2 I3

l ll l k

k

k

A

PLUS

L1

N

With current and voltage transformer

L1 L2 L3 N I1 I2 I3

l ll l kkk

A

PLUS

L1

N

K

k

L

l

U

u

V

v

With current transformer

L1 L2 L3 N I

1 I2 I3

l ll l kk

k

A

PLUS

L1

N

K

k

L

l

18/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

Three wire system, balanced load, current measurement via L1

3L.b

Direct connection

L1 L2 L3 N I1 I2 I3

l ll l kkk

A

PLUS

L1
L2
L3

With current and voltage transformer

L1 L2 L3 N I1 I2 I3

l ll l kkk

A

PLUS

L1

K

k

L

l

L2
L3

UuVvUuV

v

With current transformer

L1 L2 L3 N I1 I2 I3

l ll l kkk

APLUS

L1

K

k

L

l

L2
L3

In case of current measurement via L2 or L3 connect
voltages according to the following table:

Current Terminals L1 L2 L3

L2 I1-k I1-l L2 L3 L1
L3 I1-k I1-l L3 L1 L2

By rotating the voltage connections the
measurements U12, U23 and U31 will be
assigned interchanged !

Four wire system, balanced load, current measurement via L1

4L.b

Direct connection

L1 L2 L3 N I1 I2

I

3

l ll

l kk

k

A

PLUS

L1

N

L2
L3

With current and voltage transformer

L1 L2 L

3 N I1 I2 I3

l ll l

kkk

A

PLUS

L1

N

K

k

L

l

U

u

V

v

L2
L3

With current transformer

L1 L2 L3 N I

1 I2 I3

l ll l kk

k

A

PLUS

L1

N

K

k

L

l

L2
L3

In case of current measurement via L2 or L3 connect
voltages according to the following table:

Current Terminals L1 N

L2 I1-k I1-l L2 N
L3 I1-k I1-l L3 N

19/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

Three wire system, unbalanced load

3L.Ub

Direct connection

L1 L2 L3 N I1 I2 I3

l ll l kkk

A

PLUS

L1
L2
L3

With current and 3 single-pole isolated voltage
transformers

L1 L2 L3 N I1 I2 I3

l ll l kkk

A

PLUS

K

k

L

l

K

k

L

l

K

k

L

l

L1
L2
L3

XUXUX

U

x x x

u uu

With current transformers

L1 L2 L3 N I1 I2 I3

l ll l kkk

APLUS

K

k

L

l

K

k

L

l

K

k

L

l

L1
L2
L3

Three wire system, unbalanced load, Aron connection

3L.UA

Direct connection

L1 L2 L3 N I1 I2 I3

l ll l kkk

A

PLUS

L1
L2
L3

With current and 3 single-pole isolated voltage
transformers

L1 L2 L3 N I1 I2 I3

l ll l kkk

A

PLUS

K

k

L

l

K

k

L

l

L1
L2
L3

XUXUX

U

x x x

u uu

With current transformers

L1 L2 L3 N I1 I2 I3

l ll l kkk

A

PLUS

K

k

L

l

K

k

L

l

L1
L2
L3

20/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

Four wire system, unbalanced load

4L.Ub

Direct connection

L

1

L

2

L

3

N

I

1

I

2

I

3

l

l

l

l

k

k

k

A

PLUS

L

1

L

2

L

3

N

With current and 3 single-pole isolated voltage
transformers

L1 L2 L3 N I1 I2 I3

l ll l kkk

A

PLUS

K

k

L

l

K

k

L

l

K

k

L

l

L1
L2
L3

N

XUX

U

X

U

x x x

u uu

With current transformers

L1 L2 L3 N I1 I2 I3

l ll l kkk

A

PLUS

K

k

L

l

K

k

L

l

K

k

L

l

L1
L2
L3

N

Four wire system, unbalanced load, Open-Y

4L.UY

Direct connection

L1 L2 L3 N I1 I2 I3

l ll l kkk

A

PLUS

L1
L2
L3

N

With current and 2 single-pole isolated voltage
transformers

L1 L2 L3 N I1 I2 I3

l ll l kkk

A

PLUS

K

k

L

l

K

k

L

l

K

k

L

l

L1
L2
L3

N

XUX

U

x x

u u

With current transformers

L1 L2 L3 N I1 I2 I3

l ll l kkk

A

PLUS

K

k

L

l

K

k

L

l

K

k

L

l

L1
L2
L3

N

21/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

Split-phase ("two phase system"), unbalanced load

SP.PH

Direct connection

L1 L2 L3 N I1 I2 I3

l ll l kkk

A

PLUS

L1
L2

N

With current transformers

L1 L2 L3 N I1 I2 I3

l ll l kkk

A

PLUS

K

k

L

l

K

k

L

l

L1
L2

N

5.5 Rogowski current inputs

The connection of the Rogowski coils is performed depending on the selected system type, as shown in
chapter 5.4 above. However, instead of current transformers a Rogowski coils is placed around each
current-carrying conductor. This is subsequently shown for the measurement in a 4-wire low-voltage
system.

When connecting the coils you must follow the safety notices given in the operating
instructions of the Rogowski coil. The current direction shown on the coils must match the
real current direction and has to be the same for all phases.

In order to suppress injected interferences
the shielding (green) is connected always to
the l terminal of the current inputs (I1-l, I2-l
resp. I3-l).

22/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

5.6 Power supply

A marked and easily accessible curren t limiting switch has to be arranged in the vicinity of
the device for turning off the power supply. Fusing should be 10 Amps or less and must be
rated for the available voltage and fault current.

5.7 Relays

When the device is switched off the relay contacts are de-energized, but dangerous
voltages may be present.

The relay X2 is part of the basic unit and therefore always available.
The relays X5 and X6 are provided for device versions with I/O
extension PCB only.

The plug-in terminals have different colours to prevent mixing up the
connections. The pin assignment is the same for all relays:

23/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

5.8 Digital inputs and outputs

For the digital inputs / outputs an external power supply of 12 / 24V DC is required.

The power supply shall not exceed 30V DC !

The plug-in terminal X7 is available for device versions with I/O
extension PCB only.

The number of digital inputs / outputs varies depending on the
optional built-in PCB, see nameplate. The operating direction of
the digital I/Os on X7 may be individually selected by means of
the PC software.

The assignment of the connections depends on
whether an I/O is configured to be a digital input or a
digital output.

Example
Device with I/O extension 2 (2 relays + 6 digital I/Os)

The digital I/Os on plug-in terminal X7 are individ ually
programmable as input or output .

On plug-in terminal X3 a digital input and a digital output are
provided statically. Their operating direction may not be
modified.

Usage as digital input

► Meter tariff switching
► Operating feedback of loads for operating time counters
► Trigger and release signal for logic module
► Pulse input for meters of any kind of energy
► Clock synchronization
► Synchronization of billing intervals in accordance with energy provider

Technical data
Input current < 7,0 mA
Counting frequency (S0) ≤ 16 Hz
Logical ZERO - 3 up to + 5 V
Logical ONE 8 up to 30 V

24/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

Usage as digital output

► Alarm output for logic module
► State reporting
► Pulse output to an external counter (acc. EN62053-31)
► Remote controllable state output via bus interface

Driving a relay

Technical data
Rated current 50 mA (60 mA max.)
Switching frequency (S0) ≤ 20 Hz
Leakage current 0,01 mA
Voltage drop < 3 V
Load capacity 400 Ω … 1 MΩ

Driving a counter mechanism

1) Recommended if input
impedance
of counter > 100 kΩ

The width of the energy pulses can be selected by means of the PC
software but have to be adapted to the counter mechanism. Once a
second there is a decision how many pulses have to be output.
Therefore the delay between two pulses may not be used to
determine the present power demand.

Electro mechanical meters typically need a pulse width of

50...100ms.
Electronic meters are partly capable to detect pulses in the kHz

range. There are the types NPN (active negative edge) and PNP
(active positive edge). For the APLUS a PNP type is required. The
pulse width has to be at least 30ms (acc. EN62053-31). The delay
between to pulses corresponds at least to the pulse width. The
smaller the pulse width, the higher the sensitivity to disturbances.

25/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

5.9 Analog outputs

Analog outputs are available for devices with I/O extension 1 only. See nameplate.

Connection to an analog input card of a PLC or a
control system

The A

PLUS is an isolated measurement device. In

addition the particular outputs are galvanically
isolated. To reduce the influence of disturbances
shielded a twisted-pair cables should be used. The
shield should be connected to earth on both opposite
ends. If there a potential differences between the ends
of the cable the shield should be earthed on one side
only to prevent from equalizing currents.

Under all circumstances consider as well appropriate
remarks in the instruction manual of the system to
connect.

5.10 Modbus interface RS485 X4 and / or X8

Depending on the device version up to two Modbus interfaces are available on the plug-in positions X4
and / or X8. These are galvanically isolated. The connection terminals are distinguished by color: X4
(gray), X8 (black).

1) One ground connect ion only . T his
is possibly made within the
master (PC).

Rt: Termination resistors: 120 Ω each

for long cables (> approx. 10 m)

Rs: Bus supply resistors,

390 Ω each

The signal wires (X4-1, X4-2 resp. X8-1, X8-2) have to be twisted. GND (X4-3 resp. X8-3) can be
connected via a wire or via the cable screen. In disturbed environments shielded cables must be used.
Supply resistors (Rs) have to be present in bus master (PC) interface. Stubs should be avoided when
connecting the devices. A pure daisy chain network is ideal.

You may connect up to 32 Modbus devices to each bus. A proper operation requires that all devices
connected to the respective bus have equal communication settings (baud rate, transmission format) and
unique Modbus addresses. If there are two Modbus interfaces, their settings may be different.

The bus system is operated half duplex and may be extended to a maximum length of 1200 m without
repeater.

26/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

5.11 Profibus DP interface

The 9-pin DSUB socket serves the connection of a standard Profibus plug. In a bus terminal device, the
bus line must be terminated with resistors in the bus plug. Then standard pin assignment is as follows:

Pin Name Description

3 B RxD/TxD-P
4 RTS Request to send: CNTR-P (TTL)
5 GND Data groun d
6 +5V VP
8 A RxD/TxD-N

LED BF (Bus failure, yellow)

Status Description

ON Startup state or internal communication error
Flashing (2Hz) Parameterization check failed
OFF Cyclical operation; no error

LED BA (Bus alive, green)

Status Description

OFF Startup state; no Profibus communication
Flashing (2Hz) Profibus detected; waiting for parameterization from master
ON Parameterization ok; Profibus communication active

27/89 Device handbook APLUS with / without LED display, 157 679-19, 04/2016

6. Commissioning

Before commissioning you have to check if the connection data of the transducer match the
data of the plant (see nameplate).

If so, you can start to put the device into operation by switching on the power supply and the
measurement inputs.

Measurement input

Input voltage

Input current

System frequency

1 Works no.
2 Test and conformity marks
3 Assignment voltage inputs
4 Assignment current inputs
5 Assignment power supply
6 Load capacity relay outputs

6.1 Software installation CB-Manager

A complete parametrization of the device is possible via configuration interface only, using the PC
software CB-Manager. The software may be downloaded free of charge from our homepage

http://www.camillebauer.com

.

The file "Read-me-first" provides all necessary information for the installation of the
CB-Manager software and assistance for possible problems.

Functionality of the CB-Manager software

The software is primary a tool for the configuration of different devices (A

PLUS, CAM, VR660, A200R,

V604s) and supports the user during commissioning and service. It allows as well the reading and
visualization of measured data.

►Acquisition and modification of all device features
►Setting of real-time clock and time zone, selection of time synchronization method
►Archiving of configuration and measurement files
►Visualization of present measurements
►Reading, setting and resetting of meters
►Reading and resetting of minimum/maximum values
►Starting, stopping and resetting of the optional data logger
►Recording of measurement progressions during commissioning
►Check for correct device connection
►Simulation of states or outputs to test subsequent circuits
►Adjust the security system as protection against unauthorized access or manipulations

The CB-Manager software provides a comprehensive help facility, which describes in detail the operation
of the software as well as all possible parameter settings.